His health is ______improving. I'm sure he will come back to work soon.
The train is running ______120 kilometres an hour.
Jumping out of ____ airplane at ten thousand feet is quite _____ exciting experience.
Please remind me _______ he said he was going. I may be in time to see him off.
He _____ up the car, hoping to arrive home before dark.
I have worked with children before, so I know what ______ in my new job.